calendar clients ignoring FREEBUSY property in ical4j generated .ics file

Question

I am using ical4j to generate the following ics file

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//iOffice//iCal4j 1.0//EN
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTAMP:20170116T180054Z
DTSTART:20170116T190000Z
DTEND:20170116T200000Z
SUMMARY:03-300C Houston
UID:Reservation#someuuid
STATUS:CONFIRMED
ORGANIZER;CN=Markk Admin:mailto:email@test.com
FREEBUSY;FBTYPE=FREE:20170116T190000Z/20170116T200000Z
END:VEVENT
END:VCALENDAR

When I import this into google calendar, ical or outlook I am always 'shown as' busy ie the 3rd line from the bottom is being ignored by the clients. Am I missing something? Does anyone have an example file that I can import and see it set me to free?

Answer 1

答案是使用TRANSP：TRANSPARENT属性而不是FREEBUSY，尽管所有文档都相反